Answer
600
Work Step by Step
percent * base = amount
$15\%\times x = 90$
$0.15\times x = 90$
$0.15x\div0.15 = 90\div0.15$
$x=600$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 7 - Section 7.3 - Solving Percent Problems with Proportions - Exercise Set - Page 492: 17
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